noun
Something unexpected.
The feeling that something unexpected has happened.
verb
(transitive) To cause (someone) to feel unusually alarmed or delighted by something unexpected.
(transitive) To do something to (a person) that they are not expecting, as a surprise.
(intransitive) To undergo or witness something unexpected.
(intransitive) To cause surprise.
(transitive) To attack unexpectedly.
(transitive) To take unawares.
interjection
Drawing attention to a surprising action by oneself.
Sarcastically drawing attention to something that should have been obvious.